The Smart Money™ Counterfeit Money Detector Pen detects authenticity on U.S. currency instantly.  The patented formula leaves a temporary mark to let you know if the bill is good or suspect.  Each pen tests over 10,000 bills.  The pens are sold in packs of 3.

• Good Bill = Light/Amber mark
• Suspect Bill = Dark brown/Black mark

*Important: While no method of counterfeit detection is perfect, the Smart Money is an excellent deterrent to passing of counterfeit U.S. currency and will detect a great majority of false bills.  We recommend this product to be used in conjunction with other detection methods.  The Smart Money pen will not detect any series printed before 1959.